Finding the Fourth Proportional to 1,007,068.79, 1,389,788.50 and 565,621.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,068.79 : 1,389,788.50 = 565,621.16 : x
2. Step 2: Convert to fraction form
   1,007,068.79/1,389,788.50 = 565,621.16/x
3. Step 3: Cross multiply
   1,007,068.79x = 1,389,788.50 × 565,621.16
4. Step 4: Simplify right side
   1,007,068.79x = 786,093,779,312.83
5. Step 5: Solve for x
   x = 786,093,779,312.83/1,007,068.79
6. Step 6: Final answer
   x = 780,576.05